[mythtv-users] High X CPU usage with 8400GS

Johnny jarpublic at gmail.com
Thu May 28 16:07:45 UTC 2009

> I know that I'm not using VDPAU yet.  I'm just surprised that under
> non-VDPAU conditions, this VDPAU-capable 8400 card causes so much CPU
> load compared to the 7200 card.  I'm wondering if this is related to
> the fact that the 8400 is a PCI version -- maybe the CPU is maxed out
> by sending the decoded 720p video stream over the PCI bus, which
> presumably wouldn't happen when VDPAU is doing the decoding.

Perhaps you were using XvMC before? the 7xxx cards support XvMC but
the 8xxx and up don't.

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